content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.flowable.internal.operators;
  
  import org.reactivestreams.*;
  
  import hu.akarnokd.reactivestreams.extensions.RelaxedSubscriber;
  import io.reactivex.common.RxJavaCommonPlugins;
  import io.reactivex.common.exceptions.*;
  import io.reactivex.common.functions.Function;
  import io.reactivex.flowable.Flowable;
  import io.reactivex.flowable.internal.subscriptions.SubscriptionArbiter;
  
  public final class FlowableOnErrorNext<T> extends AbstractFlowableWithUpstream<T, T> {
      final Function<? super Throwable, ? extends Publisher<? extends T>> nextSupplier;
      final boolean allowFatal;
  
      public FlowableOnErrorNext(Flowable<T> source,
              Function<? super Throwable, ? extends Publisher<? extends T>> nextSupplier, boolean allowFatal) {
          super(source);
          this.nextSupplier = nextSupplier;
          this.allowFatal = allowFatal;
      }
  
      @Override
      protected void subscribeActual(Subscriber<? super T> s) {
          OnErrorNextSubscriber<T> parent = new OnErrorNextSubscriber<T>(s, nextSupplier, allowFatal);
          s.onSubscribe(parent.arbiter);
          source.subscribe(parent);
      }
  
      static final class OnErrorNextSubscriber<T> implements RelaxedSubscriber<T> {
          final Subscriber<? super T> actual;
          final Function<? super Throwable, ? extends Publisher<? extends T>> nextSupplier;
          final boolean allowFatal;
          final SubscriptionArbiter arbiter;
  
          boolean once;
  
          boolean done;
  
          OnErrorNextSubscriber(Subscriber<? super T> actual, Function<? super Throwable, ? extends Publisher<? extends T>> nextSupplier, boolean allowFatal) {
              this.actual = actual;
              this.nextSupplier = nextSupplier;
              this.allowFatal = allowFatal;
              this.arbiter = new SubscriptionArbiter();
          }
  
          @Override
          public void onSubscribe(Subscription s) {
              arbiter.setSubscription(s);
          }
  
          @Override
          public void onNext(T t) {
              if (done) {
                  return;
              }
              actual.onNext(t);
              if (!once) {
                  arbiter.produced(1L);
              }
          }
  
          @Override
          public void onError(Throwable t) {
              if (once) {
                  if (done) {
                      RxJavaCommonPlugins.onError(t);
                      return;
                  }
                  actual.onError(t);
                  return;
              }
              once = true;
  
              if (allowFatal && !(t instanceof Exception)) {
                  actual.onError(t);
                  return;
              }
  
              Publisher<? extends T> p;
  
              try {
                  p = nextSupplier.apply(t);
              } catch (Throwable e) {
                  Exceptions.throwIfFatal(e);
                  actual.onError(new CompositeException(t, e));
                  return;
              }
  
              if (p == null) {
                  NullPointerException npe = new NullPointerException("Publisher is null");
                  npe.initCause(t);
                  actual.onError(npe);
                  return;
              }
  
              p.subscribe(this);
          }
  
          @Override
          public void onComplete() {
              if (done) {
                  return;
              }
              done = true;
              once = true;
              actual.onComplete();
          }
      }
  }
  